Experimental Study on Characteristics of NiMnGa Magnetically Controlled Shape Memory Alloy  

作　　者：Fengxiang WANG Wenjun LI Qingxin ZHANG Chenxi LI Xinjie WU 

机构地区：[1]Shenyang University of Technology, Shenyang 110023, China

出　　处：《Journal of Materials Science & Technology》2006年第1期55-58,共4页材料科学技术（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China under grant No.50177019;by the Education Department of China under grant No.20040142004.

摘　　要：The static and dynamic magnetic controlling characteristics of NiMnGa magnetically controlled shape memory alloy （MSMA） were experimentally studied. The results show that the characteristics of induced strain with respect to the magnetic field are nonlinear with saturation nature, and dependent on the temperature as well as the load applied to the MSMA. The magnetic shape memory effect can be observed only in complete martensite phase at room temperature. The magnetic permeability of MSMA is not constant and reduces with the increment of magnetic field. The relative saturation magnetic permeability of MSMA is about 1.5.The static and dynamic magnetic controlling characteristics of NiMnGa magnetically controlled shape memory alloy （MSMA） were experimentally studied. The results show that the characteristics of induced strain with respect to the magnetic field are nonlinear with saturation nature, and dependent on the temperature as well as the load applied to the MSMA. The magnetic shape memory effect can be observed only in complete martensite phase at room temperature. The magnetic permeability of MSMA is not constant and reduces with the increment of magnetic field. The relative saturation magnetic permeability of MSMA is about 1.5.

关 键 词：NIMNGA Magnetically controlled shape memory alloy CHARACTERISTICS Experimental study 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TG139.6[金属学及工艺—金属材料]